Template for lock plate mortises



p 5, 1953 E. P. SACREY 2,651,847

TEMPLATE FOR LOCK PLATE MORTISES Filed April 13, 1949 INVENTOR. [/me;- i? Jamey Patented Sept. 15, 1953 TEMPLATE FOR LOCK PLATE MORTISES Elmer P. Sacrcy, Syracuse, N. Y., assignor to Porter-Cable Machine Company, Syracuse, N. Y., a corporation of New York Application April 13, 1949, Serial No. 87,247

1 Claim.

1 r This invention relates to templates for lock plate mortises of the type shown in my Patent No. 1,954,358, April 10, 1934.

The templates of this type comprise generally a body plate for applying to the edge face of an element, as a door, to be provided with a mortise, mortise locating gages carried by the body plate and means as a pair of jaws at each end of the body plate for supporting the body plate on the element or door with the body plate fiatwise on the edge of the door, the body plate being swiveled to the jaws to permit the body plate to be positioned fiatwise on the edge faces of various beveled angles. In the patent referred to, the axis of the swiveled joint is offset from the plane of surfaces of the body plate engaging flatwise the edge face of the door and hence, the accuracy of the positions of the body plate to the edge of the door and the gages is upset.

In the template of the patent, where the axis of the swivel is offset from or spaced from the plane of the edge face of the door, or the plane of the faces of the body pressed flatwise against the edge face of the door, the pre-set gages are shifted slightly laterally as a unit out of their intended position, the amount being dependent upon the angle of the bevel of the edge face of the door.

Thi invention has for its object the location of the axis of the swivel substantially in, or very nearly in, the plane of the faces of the body plate which press against the edge face of the door.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like character designate corresponding parts in all the views.

Figure 1 is an elevation, partly broken away, of a template embodying this invention.

Figure 2 is an end View looking downwardly, or upwardly, in Figure 1, showing the same applied to a door which is shown in section.

Figure 3 is an enlarged vertical sectional view through the swivel joint on the plane of line 3-3, Figure 1.

Figure 4 is an enlarged sectional view on line 4-4, Figure 1.

l designates the body plate, and 2, 3 and 4, 5, designate the side gages and the end gages mounted in the body plate I, these being practically the same as in the patent referred to.

6 and l designate a pair of jaws mounted at each end of the body plate I for supporting the body on the edge of the door, the jaws being supported by a block 8 which is swiveled to the adjacent end of the body plate I on an axis extending lengthwise of the door, the jaws being adjustable toward and from each other by a screw 9 having right and left threaded connections with the jaws and operable by a handle I0 at one end of the screw. The screw is held from endwise movement relatively to the support by a collar ll thereon between opposing shoulders [2 on the block 8. The block 8 is mounted on the adjacent end of the body I by a swiveled joint, this consisting of a hub I3 nearly semi-cylindrical in cross section provided with an arcuate, or nearly semicylindrical bore of somethin less than 180 and opening through the chordal face of the hub which is toward the edge face of the door when the template is applied to the door. A complemental stud I4 is carried on the adjacent end of the body I and rotatably fits into the bore of the hub. The hub is formed with lateral peripheral flanges I 5 which interlock in a complemental undercut or countersink It in the bore of the body I. The hub and also the stud are thus segmental of complete cylinders and of an are not greater than 180 and with fiat chordal faces. The axis of the stud and hence the axis of the swivel joint is so located that it is substantially in or very nearly in the plane of the faces of the body plate I which pres against the edge face of the door. The chordal or diametrical face of the segmental hub is located so that it does not project beyond the faces of the body plate which press against the edge of the door in any position of the plate about the axis of the swivel.

As here shown, the body plate is formed with raised accurately ground faces I! near its upper and lower ends and on opposite sides of the axis of the swivel joint for pressing against the edge of the door so that the pivotal movement of the jaws is about an axis located practically in the plane of the edge face of the door when the template is applied to the door. Hence, the position of the body plate is not shifted laterally slightly when the jaws are tightened on the door, this being of particular advantage in cases where the edge face of the door is beveled at variou angles.

The stud I4 is a separate piece from the base plate and is secured to the base plate by a fastenil'lg member or screw l8 having a socketed head, the screw extending radially through the stud into the base plate, and the head of the screw being located flush with the flat face of the stud. The amount of swiveling movement of the block 8 is limited by a pin IS on the end of the base 3 plate and extending in a slot 20 in the swiveled block 8.

The jaws are provided with grooves 2| which interfit with ribs 22 on the support 8. The jaws are made with grooves on upper and lower sides thereof in order that any one jaw may be applied as a right or left jaw.

The operation of the tool is the same as in the patent referred to except that the base plate swivels about an axis located in the plane of faces on the body plate I which are pressed against the beveled edge face of the door.

What I claim is:

A templet for mortises comprising a body plate, mortise locating gages carried by the body Plate and means for supporting the body plate on the edge face of an element to be provided with the mortise, the body plate having faces for pressing flatwise against the edge of said element, the supporting means comprising a block, a pair of jaws 20 adjustable lengthwise of the block and transversely of the plate for clamping on opposite side faces of said element, the block having a hub arcuate in cross section and swiveled in an arcuate bearing in the body plate, the hub being formed with an axial bore arcuate in cross section, and a stud carried by the body plate and rotatably fitting the bore, the stud being arcuate in cross section and having a flat chordal face located in the plane of the faces of the body plate which press against the edge of said element, and the hub having a diametrioal fiat face located out of said plane in any swiveled position of the body plate, and a stop for limiting the relative swivelin of the body plate and the block.

ELMER P. SACREY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,326,583 Catalanotto Dec. 30, 1919 1,788,256 Sherwin Jan. 6, 1931 1,954,368 Sacrey Apr. 10, 1934 

